From: Luo Meng <luomeng12@xxxxxxxxxx>
commit f50cb2cbabd6c4a60add93d72451728f86e4791c upstream.
Dm_integrity also has the same UAF problem when dm_resume()
and dm_destroy() are concurrent.
Therefore, cancelling timer again in dm_integrity_dtr().
Cc: stable@xxxxxxxxxxxxxxx
Fixes: 7eada909bfd7a ("dm: add integrity target")
Signed-off-by: Luo Meng <luomeng12@xxxxxxxxxx>
Signed-off-by: Mike Snitzer <snitzer@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/md/dm-integrity.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/md/dm-integrity.c
+++ b/drivers/md/dm-integrity.c
@@ -4195,6 +4195,8 @@ static void dm_integrity_dtr(struct dm_t
BUG_ON(!RB_EMPTY_ROOT(&ic->in_progress));
BUG_ON(!list_empty(&ic->wait_list));
+ if (ic->mode == 'B')
+ cancel_delayed_work_sync(&ic->bitmap_flush_work);
if (ic->metadata_wq)
destroy_workqueue(ic->metadata_wq);
if (ic->wait_wq)
